TDA7480 Datasheet, PDF (3/10 Pages) STMicroelectronics – 10W MONO CLASS-D AMPLIFIER

TDA7480
ELECTRICAL CHARACTERISTICS (Refer to the test circuit, VCC = ±14V; RL = 8Ω; RS = 50Ω;
Rf = 12KΩ; Demod.. filter L = 60µH, C = 470nF; f = 1KHz; Tamb = 25°C unless otherwise specified.)
Symbol
VS
I_q
V_OS
PO
P_d (*)
P_DMAX
η
Parameter
Supply Range
Total Quiescent Current
Output Offset Voltage
Output Power
Dissipated Power at 1W Output
Power
Maximum Dissipated Power
Efficiency ≡
P_O
P_O + P_D
≡
P_O
P_I
(**)
Test Condition
R_L = ∞; NO LC Filter
Play Condition
THD = 10%
THD = 1%
R_L = 4Ω V_CC = ±10.5V
THD = 10%
THD = 1%
R_f = 12KΩ P_Ο = 1W
P_Ο = 10W THD 10%
R_th-j-amb = 38°C/W (Area 12cm²)
THD 10%
Rth-j-amb = 38°C/W (Area 12cm²)
Min.
±10
–50
8.5
6
80
Typ.
25
10
7
10
7
1
1.8
85
Max.
±16
40
+50
Unit
V
mA
mV
W
W
W
W
W
W
%
THD
Imax
T_j
GV
e_N
Ri
SVR
T_r, T_f
RDSON
F_SW
F_{SW_OP}
B_F
R_F
V_ST-BY
V_MUTE
V_PLAY
A_MUTE
IqST-BY
Total Harmonic Distortion
R_L = 8Ω; P_O = 0.5W
Overcurrent Protection
Threshold
RL = 0
Thermal Shut-down Junction
Temperature
Closed Loop Gain
Total Input Noise
A Curve
f = 20Hz to 22KHz
Input Resistance
Supply Voltage Rejection
f = 100Hz; V_r = 0.5
Rising and Falling Time
Power Transistor on Resistance
Switching Frequency
Switching Frequency Operative
Range
Zero Signal Frequency
Constant (***)
Frequency Controller Resistor
Range (****)
MUTE & STAND-BY FUNCTIONS
Stand-by range
Mute Range
Play Range (1)
Mute Attenuation
Quiescent Current @ Stand-by
0.1
3.5
5
150
29
30
31
7
12
20
30
46
60
50
0.4
100 120 140
100
200
1.4x10⁹
7
12
14
%
A
°C
dB
µV
µV
KΩ
dB
ns
Ω
KHz
KHz
HzΩ
KΩ
0.8
V
1.8
2.5
V
4
V
60
80
dB
3
5
mA
*: The output average power when the amplifier is playing music can be considered roughly 1/10 of the maximum output power. So it is useful
to consider the dissipated power in this condition for thermal dimensioning.
**: PO = measured across the load using the following inductor:
COIL 58120 MPPA2 (magnetics) TURNS: 28 ∅ 1mm
COIL77120 KOOL Mµ (magnetics) TURNS: 28 ∅ 1mm
***: The zero-signal switching frequency can be obtained using the following expression: FSW = BF/RF
****: The maximum value of RF is related to the maximum possible value for the voltage drop on RF itself.
(1): For V12 >5.2V, an input impedance of 10KΩ is to be considered.
3/10